<?xml version="1.0" encoding="ISO-8859-1"?><article xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
<front>
<journal-meta>
<journal-id>2007-9028</journal-id>
<journal-title><![CDATA[Ecosistemas y recursos agropecuarios]]></journal-title>
<abbrev-journal-title><![CDATA[Ecosistemas y recur. agropecuarios]]></abbrev-journal-title>
<issn>2007-9028</issn>
<publisher>
<publisher-name><![CDATA[Universidad Juárez Autónoma de Tabasco, Dirección de Investigación y Posgrado]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S2007-90282019000100065</article-id>
<article-id pub-id-type="doi">10.19136/era.a6n16.1784</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Distribución, densidad y estructura dasométrica de Haematoxylum campechianum y Haematoxylum calakmulense en Campeche, México]]></article-title>
<article-title xml:lang="en"><![CDATA[Distribution, density and dasometric structure of Haematoxylum campechianum and Haematoxylum calakmulense in Campeche, Mexico]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Chablé-Vega]]></surname>
<given-names><![CDATA[Manuel Alejandro]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Plasencia-Vázquez]]></surname>
<given-names><![CDATA[Alexis Herminio]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[García-González]]></surname>
<given-names><![CDATA[Alfredo]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Ferrer-Sánchez]]></surname>
<given-names><![CDATA[Yarelys]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Riverón-Giró]]></surname>
<given-names><![CDATA[Frander Brian]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Zamora-Crescencio]]></surname>
<given-names><![CDATA[Pedro]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universidad Autónoma de Campeche Facultad de Ciencias Químico-Biológicas ]]></institution>
<addr-line><![CDATA[Campeche Campeche]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Universidad Autónoma de Campeche  ]]></institution>
<addr-line><![CDATA[Campeche Campeche]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af3">
<institution><![CDATA[,Universidad Técnica Estatal de Quevedo Facultad de Ciencias Ambientales ]]></institution>
<addr-line><![CDATA[Quevedo Los Ríos]]></addr-line>
<country>Ecuador</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>04</month>
<year>2019</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>04</month>
<year>2019</year>
</pub-date>
<volume>6</volume>
<numero>16</numero>
<fpage>65</fpage>
<lpage>77</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S2007-90282019000100065&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S2007-90282019000100065&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S2007-90282019000100065&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen: En la Península de Yucatán se desarrollan dos especies del género Haematoxylum: Haematoxylum campechianum y H. calakmulense. El objetivo del presente trabajo fue evaluar el estado actual de las poblaciones de ambas especies en diferentes sitios en Campeche, México. Para conocer la distribución histórica y actual se utilizaron registros de herbarios publicados, información de proyectos y expediciones de campo. Para medir la densidad y la estructura dasométrica se seleccionaron ocho sitios con concentraciones de individuos de una u otra especie, y se establecieron 20 parcelas de 10 x10 m en cada sitio. En las parcelas se contabilizaron y midieron los individuos de ambas especies con diámetro del tronco a la altura del pecho (DAP) mayor de 1 cm. Para cada individuo se tomó la altura, DAP y número de ramas. Se compararon las variables densidad, altura, DAP, número de ramas entre sitios y las frecuencias absolutas de los intervalos de tamaño y DAP dentro de cada sitio. Haematoxylum campechianum se encuentra ampliamente distribuido en el estado de Campeche y se localizó formando tintales y como árboles aislados. Mientras que H. calakmulense se encuentra en zonas interiores del estado con valores de densidad menores que H. campechianum, en ninguno de los sitios se encontró formando tintales. Para H. calakmulense los individuos más altos alcanzaron 12 m y para H. campechianum 15 m. Considerando el potencial económico, cada especie puede verse afectada por actividades antropogénicas que provoquen la disminución de sus poblaciones a mediano y largo plazo.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract: In the Yucatan Peninsula, two species of the genus Haematoxylum grow: Haematoxylum campechianum and Haematoxylum calakmulense. The objective of this study was to evaluate the current status of the populations of both species at different sites in Campeche, Mexico. In order to know the historical and current distribution, published herbarium records, project information, and field expeditions were used. Eight sites with concentrations of individuals of one of the species or the other were selected to measure population density and structure, and 20 plots of 10 x 10 m were established at each site. In the plots, individuals of both species were counted and measured with trunk diameter at chest height (DBH) greater than 1 cm. For each individual the height, DBH and number of branches were recorded. We compared the variables density, height, DBH, number of branches between sites and the absolute frequencies of the size intervals and DBH within each site. Haematoxylum campechianum is widely distributed in the state of Campeche and was located forming seasonally inundated forests and as isolated trees, while H. calakmulense was recorded in interior areas of the state with lower density values than H. campechianum; none of the sites were found forming seasonally inundated forests. For H. calakmulense the highest individuals reached 12 m and for H. campechianum 15 m. Considering the economic potential, each species may be affected by anthropogenic activities that cause their populations to decline in the medium and long term.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[Especie comercial]]></kwd>
<kwd lng="es"><![CDATA[especie con valor patrimonial]]></kwd>
<kwd lng="es"><![CDATA[Península de Yucatán]]></kwd>
<kwd lng="es"><![CDATA[selva baja inundable]]></kwd>
<kwd lng="es"><![CDATA[tintal]]></kwd>
<kwd lng="en"><![CDATA[Commercial species]]></kwd>
<kwd lng="en"><![CDATA[species with heritage value]]></kwd>
<kwd lng="en"><![CDATA[Yucatan Peninsula]]></kwd>
<kwd lng="en"><![CDATA[lowland forest]]></kwd>
<kwd lng="en"><![CDATA[tintal]]></kwd>
</kwd-group>
</article-meta>
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